Propeller mounting for toy airplanes



y 16, 1939- N. E. WALKER 2,158,344

PROPELLER MOUNTING FOR TOY AIRPLANES Filed Feb. 19, 1938 "will".

I, J4 I I noen7o'r Patented May 16, 1939 UNITED STATES PATENT OFFICE PROPELLER MOUNTING FOR TOY AIRPLANES Nevilles E. Walker, Portland, Oreg. Application February 19, 1938, Serial No. 191,461

12 Claims.

My invention relates to toy airplanes and particularly to that type in which a double-bladed propeller is carried upon one end of a propeller tor may be attached so that said propeller shaft and said propeller can be rotated by the twisted rubber band. It is desirable that the propeller be a washer tightly about said propeller shaft thus made and into close abutment with one edge of the propeller blade. The means of attachment 45 features thereof and in connection with the accompanying drawing in which:

Fig. 1 is an elevation of a toy airplane embodying my invention, with a portion of said airplane being shown broken away to disclose details 50 which would otherwise be concealed;

Fig. 2 is an enlarged longitudinal section taken Fig. 3 is an elevation taken on the line 3-3 in Fig. 2;

Fig. 4 is a larger scaled perspective detail, illustrating the looped end of the propeller shaft which encircles 20' tion and is journalled in a metallic nose piece 9 seated in and sealing the forward end of said airplane body a. Said nose piece preferably comprises a shell 9' and a disc 92. Said disc is preferably held in place in said shell by the 5 with a hole sufficiently large only to accommodate the shank portion f2 of the propeller shaft. 30 The propeller shaft is also journalled in an aperture g5 formed in the point of the Said aperture 95 and the pierced portion g4 in the disc are alined and extend axially of the Said propeller shaft is preferably formed of a section of half-round wire, bent back upon The flattened Said Washer is moved into place preferably under substantial pressure, as is diagrammatically illustrated in Fig. 5, being produced by a pair of pincers 2'. One of the jaws i of said pincer is bifurcated and straddles the shank portion 2 of the propeller shaft and is arranged outside of the washer. The other jaw i2 is solid and is arranged to overlie the end of the loop f3 previously formed within, the. bight of the bent over section, of; material constituting. the propeller shaft. Pressure is then exerted upon the pincers and the Washer is forced up the,- shank, tightly against the loop, which is closed tightly about the propeller blade: 0. Sufficient pressure is produced to seat the washer tightly-in place. Thus, the opposed lengths of the. piece of material constituting said propeller shaft are held tightly against each. other; within the. bore of the washer h. The other end of. the. shank which is formed into the end f is held againstdisengagement.becausethe loop. isformed transversely to the plane of flattened faces; of the lengths; of. material; makingsaid propeller shaft, and=thus said lengths of material-.aremrevented. from, separating: from; each; other; as is; shownin- Fig. 2',

I; preferably arrange-a semiesphergical washer: 7' between the. outer 'face of; shell; 9'" andithe; washer h. so asto minimize-the area of; contact against saidwasher; and thus decrease; the; frictional en;- gagement of saidwasher with. thenosepiece.

When said: washer has; been. seated tightly in. place; andthe pincers released, I preferably apply a layer of glue, as at it, over the-'loopediportion-J 3 ofthe propeller shaft, the;.washer and the adjacent portions of" the; propeller so as. to hold the; propeller, saidl loop, and; said: washer in, the positions at: which they" pincers: seat: the washer tightly-ingplace. that the washerstays place; moderately: welli without glue, butwhen held-by alayer of; glue, the; maintenance. of. said, relative: position. is: assuited.

Ipclaim-r 1;. Inconstructing a.mounting;forthepropellerof: a: toy airplanethe method steps. comprising bendin n: elongated; sectionoft flatrraced. mate-- rial backuponitselfrwith the-flattened faces opposing; each other, arranging; 31.. propeller blade withinthebightrthus formed; and-forcing a:.closefitting washer element: longitudinally; over: said.

bent material with; such: force as: to crimp the latter; tightly against the-edges of said; propeller and. to wedge-the washer: element-in place.

2; In constructingramoun-tingt for: the propeller of a toy airplane the method steps. comprising bending-an elongated;section-.of fiat-faced material back: upon posing each other, arranging a. propeller blade 1 within thebight thus formed'. forcing. a. close fitting washer, element longitudinally over said bent material withsuch force as to, crimp; the latter tightly'against the edges of said propeller and to wedge the washer element in place; and applying 1 a coating ofglue over said-bent material and the adjacent portions of the propeller to hold: said parts in seated engagement.

3.- In constructing a mounting:for. the propeller of a toy airplane the method: steps comprising bending -anelongated section of fiat-facedmaterialback: upon itself with the flattened facesops posing. each. other, arranging. a propeller blade within the bight thus formed-,- fOICiBQZajLOIOSGrfitE- ting. washer element longitudinally oyerrsaidibenta material, with such. force as. to.. crimp: the; latter are; arranged when, the, I. find.

itself with; the flattened faces optightly against the edges of said propeller and to wedge the washer element in place, and applying a coating of glue over said bent material and the adjacent portions of the propeller and the washer element to hold said parts in seated engagement.

4. In constructing a mounting for the propeller of a toy airplane the method steps comprising bending an elongated section of half-round material. back uponitself with theflattenedfaces opposing each. other;v arranging a propeller blade within the bight thus formed, and forcing a closefltting washer element longitudinally over said bent material with such force as to crimp the latter; tightly; against the edges of said propeller and to wedge the washer element in place.

5. In. a toy airplane, a body, a propeller, a motor for rotating said propeller, a nose piece for saidibody-and a propeller shaft joining said motor to said propeller, said propeller shaft being journalled in said nose piece, said shaft comprising an elongated: section. of half-round; material doubled back; upon itselfto define. an element of circular. section, said half-round material. being; looped about and engagingcsaidpropeller within the bightthus formed, with the flattened sides. thereof abutting: against the faces of: said pro,- peller and each other respectively.

6. I-n-. a. toy airplane, a: b,ody,. a propeller, a.-

forcibly.- seatedagainst said looped portiontohold the latter intightengagementwith the. edges: of. said propeller.

7. In a toy airplane a body, a. propeller, a.

motorgf'or rotating said propeller,.a nose piecefor. saidbody, and a propeller shaft joiningsaid motor. to said propeller, said'nose, piece having, a plurality of spaced lateral. webs formed therein,, said propeller shaft being journalled inthe. web portions ofsaid nose piece; saidishaft comprising an.

elongated section ofhalf-round material doubled back upon itself to-defineanelement of'circular section, said half-round material being looped about-and engaging said-'propellerwithinthe bight.

thus.- formed; with" the flattened sides thereof abutting against thefaces of said propeller and each other; respectively;

8. In atoy. airplane, a body, a propeller, anelastic band motor for rotatingsaid propeller; a

metallic nose piece for said body, and a propeller shaft. joining said'band motorto said propeller; said nosepieee having aplurality of'spacedlatera'l' websformed therein, said propeller shaft being journaledin theweb portionsof saidnose piece,

said. shaft comprising an elongated section of,

half-round material doubled back upon itself to define an element of circularsection, said halfroundmaterial being loopedabout and engaging, said propeller within the bight thus formed, with.

the flattened sides thereof abuttingagainst thefaces of said propeller and each" other, respectively, and a washer forciblyseated against said loopedportion tohold-the latter in tight engagement with the edges of'said propeller.

9'. A propeller mounting for airplanes compris ing a nose piece for the forwardend of an"alr-'- 7 plane body, a propeller and a propeller shaft journalled in said nose piece, said shaft engaging said propeller by one end of said shaft and provided with a formed attachment means for a band motor at the other end thereof, said shaft comprising two lengths of an elongated section of half-round material lying alongside each other with the flattened faces of said half-round material opposing each other and engaging the opposite sides of the propeller, and at a point distant from said propeller abutting against each other and together constituting a shaft of circular section.

10. A propeller mounting for toy airplanes comprising a nose piece for the forward end of an airplane body, a propeller and a propeller shaft journaled in said nose piece, said shaft engaging said propeller by one end of said shaft and provided with a formed attachment means for a band motor at the other end thereof, said shaft comprising two lengths of an elongated section of flattened material, lying alongside each other, the attachment means engaging one end of the lengths to hold said flattened faces thereof in abutting relation with each other.

11. A propeller mounting for toy airplanes comprising a nose piece for the forward end of an airplane body, a propeller and a propeller shaft journalled in said nose piece, said shaft engaging said propeller by one end of said shaft and provided with a formed attachment means for a band motor at the other end thereof, said shaft comprising two lengths of an elongated section of flattened material, lying alongside each other, and comprising a single piece of material bent back upon itself to constitute said two lengths, said section of material being looped about and engaging said propeller in the bight thus formed with the flattened sides thereof adjacent the bend abutting against the faces of the propeller and the remainder abutting against the opposed flattened faces of the two lengths, respectively, and a washer closely encircling said abutting lengths adjacent the looped portion of said section to hold the latter in tight engagement with the faces of said propeller.

12. A propeller mounting for toy airplanes comprising a nose piece for the forward end of an airplane body, a propeller and a propeller shaft journaled in said nose piece, said shaft engaging said propeller by one end of said shaft and pro vided with a formed attachment means for a band motor at the other end thereof, said shaft comprising two lengths of an elongated section of half-round material, lying alongside each other, and comprising a single piece of material bent back upon itself to constitute said two lengths, and together constituting a shaft of circular section, said section of half-round material being looped about and engaging said propeller in the bight thus formed with the flattened sides thereof adjacent the bend abutting against the faces of the propeller and the remainder abutting against the opposed flattened faces of the two lengths, respectively, and a washer closely encircling said abutting lengths adjacent the looped portion of said section to hold the latter in tight engagement with the faces of said propeller.

NEVILLES E. WALKER. 

